Skin care Flashcards
1
Q
What are free radicals?
A
Highly reactive atoms that have one unpaired electrons
2
Q
Describe the initiation phase of a free radical reaction:
A
When UV is supplied to a molecule the energy from the light breaks the bond producing free radicals
3
Q
Describe the propagation phase of a free radical reaction:
A
The highly reactive free radicals remove atoms from other (stable) compounds to become stable. This produces more free radicals
4
Q
Describe the termination phase of a free radical reaction:
A
2 free radicals combine to form a stable molecule
5
Q
What are Free radical scavengers?
A
Chemicals that react with and destroy free radicals
6
Q
One example of a free radical scavenger?
A
Vitamin C
7
Q
What are some commercial examples of free radicals
A
Skin creams, added to foods and plastics
